Elsevier

Contraception

Volume 79, Issue 1, January 2009, Pages 5-14
Contraception

Original research article
Cost effectiveness of contraceptives in the United States

https://doi.org/10.1016/j.contraception.2008.08.003Get rights and content

Abstract

Background

The study was conducted to estimate the relative cost effectiveness of contraceptives in the United States from a payer's perspective.

Methods

A Markov model was constructed to simulate costs for 16 contraceptive methods and no method over a 5-year period. Failure rates, adverse event rates and resource utilization were derived from the literature. Sensitivity analyses were performed on costs and failure rates.

Results

Any contraceptive method is superior to “no method”. The three least expensive methods were the copper-T intrauterine device (IUD) (US$647), vasectomy (US$713) and levonorgestrel (LNG)-20 intrauterine system (IUS) (US$930). Results were sensitive to the cost of contraceptive methods, the cost of an unintended pregnancy and plan disenrollment rates.

Conclusion

The copper-T IUD, vasectomy and the LNG-20 IUS are the most cost-effective contraceptive methods available in the United States. Differences in method costs, the cost of an unintended pregnancy and time horizon are influential factors that determine the overall value of a contraceptive method.

Introduction

Despite the introduction of highly effective reversible contraceptive methods, nearly half (49%) of the 6.4 million pregnancies each year in the United States are unintended; there were more than 3 million unintended pregnancies in 2001, the last year from which data are available [1]. The direct medical costs of these unintended pregnancies totaled US$5 billion [2].

Contraceptive use saves nearly US$19 billion in direct medical costs each year [2]. In an era of increasingly constrained resources, health-care decision makers are being held accountable for providing health-care services and treatments that optimize value received for resources expended. Currently available contraceptive methods vary greatly in their efficacy and overall cost. Long-acting methods, such as intrauterine contraceptives and implants, have high effectiveness rates that do not depend on compliance or daily usage. However, their usage has been limited [3].

In contrast, user-dependent methods (e.g., condoms, oral contraceptives) may incur pregnancy-related costs that may greatly exceed the method costs themselves. Thus, there is need for good evidence on the costs and effectiveness of different contraceptive options so that individuals can make an informed choice and health plans can provide the right mix of contraceptive options.

In a previous publication on the cost effectiveness of female contraceptives, we showed that intrauterine contraceptives were more cost effective than all other female contraceptive methods [4]. In the present analysis, we update and expand our previous estimates to include no contraceptive method (chance), male contraceptive methods and new market entrants such as implants. In addition, we adjusted the costs associated with unintended pregnancies to account for mistimed pregnancies so that the results would be generalizable to the entire population of women of reproductive age, not just those who had completed childbearing.

Section snippets

Model design

A Markov model was constructed from the health-care payer perspective to evaluate the costs and effectiveness of using 16 contraceptive methods: vasectomy and tubal ligation as well as 14 reversible methods (oral contraceptives), transdermal contraceptive patch, vaginal ring, copper-T intrauterine device (IUD), levonorgestrel (LNG)-20 intrauterine system (IUS), male condom, female condom, injectable contraceptive, implant, diaphragm, spermicides, sponge, withdrawal and fertility-awareness-based

Base case analysis

Any contraceptive method is superior to no method in terms of costs and effectiveness. The average expected effectiveness ranged from 48% to nearly 100% (99.96%). The most effective methods were vasectomy (100%), the implant (100%), tubal ligation (99.8%), the LNG-20 IUS (99.8%) and the copper-T IUD (99.6%) (Table 3). Five-year costs ranged from US$647 to US$4739. The three least expensive methods were the copper-T IUD (US$647), vasectomy (US$713) and the LNG-20 IUS (US$930).

Results at 5 years

Discussion

Using a 5-year Markov model, we examined the cost-effectiveness of contraceptives (including chance, or no method) in the United States from a health-care payer's perspective. The findings from this study highlighted the fact that all contraceptive methods were more cost effective when compared to no method. Results indicated that long-term contraceptives prevent unintended pregnancies without relying on user compliance while providing excellent value for money. The three least expensive

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    This study was supported by a research grant from Bayer HealthCare Pharmaceuticals, Wayne, NJ, USA.

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